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Full text of "Hydrangea kwangsiensis"

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\3 Biodiversity 

Journal of the Arnold Arboretum. 

Cambridge, Mass. :Arnold Arboretum, Harvard University [etc.],1919- 

v.1 1-12 (1930-1931): 
Page(s): Page 152, Page 153 

Contributed by: Missouri Botanical Garden, Peter H. Raven Library 
Sponsored by: Missouri Botanical Garden 

Generated 28 November 201 1 9:09 PM 

This page intentionally left blank. 


veins projecting from the bases of the sinus forming triangular 
teeth, hut differs in the midribs and secondary veins beneath 
being glabrous, while the midribs above are pilose. 

It is very satisfactory to have been able to collect the fruits 
and to publish a supplementary description of this interesting 
species which Rehder & Wilson first published fourteen years 
ago based on sterile specimens. This species is striking also in the 
involucre being covered not with recurved prickles but with very 
short appressed deltoid scales, a character very rare in the genus 
Fagnx, which easily differentiates this from all other eastern Asiatic 
species. It is very common in the woods on the top of l)ar hills 
above Dar Young Kiang. 

Hydrangea kwangsiensis, sp, no v. 

Frutex 1 in. alt us, ram u lis gnu *i lib us teretibus glabris. Folia 
inembranacea, oblanccolata vel lanceolata, 7-10 cm. longa et 
1.8 L i.H era. lata, acuminata, basi cuneata et decurrentia, margine 
leviter revoluta et satis remote minuteque eallosa-dentieulata, 
glabra, supra lactc viridia et cost a leviter clcvata, subtus pallide 
viridia, cost a niagis elevata et venis lateralibus curvatis vix dis- 
tinct is; petioli 8-10 mm. longi, glabri. Cymae planae, satis multi- 
florae, ad 14 cm. longae et 8-9 cm. latac, lunge pcduneulatae 
pedunculo circitcr 5 cm. longo graeili, radiis 3 5 oppositis, basi 
bracteis parvis foliaeeis suffultis, axibus pedieellisque minute 
crispulo-villnsis; pedicelli graciles, 1.5 £ mm. longi; flores steriles 
pain i, sepaJis 4 alius rhoinbico-ovatis vel suborbicularibus 11 mm. 
longis latisque ad inarginem crispatis; flores fertiles eoerulescentes, 
tubo calyeis turbinato minute liispidulo, dentibus triangularibus, 
petalis late ovatis apice rotundatis c 2 mm. longis, staminibus 10 
suhacqualihus quam ])etala brevioribus; ovarium scmi-superum; 
sty H 3 recurvi. Fructns ignotus* 

Shrul> to 1 m. high; branchlets slender, terete, glabrous, leaves 
membranaceous, oblanccolate to lanceolate, acuminate, cuneate 
and decurrent at base, slightly revolute and rather remotely and 
minutely eallose-dentieulate, glabrous, light green and with slightly 
elevated midrib above, pale green and with more prominently 
elevated midrib and very faint lateral arching veins beneath, 7-10 
cm. long, 1,8-2.8 cm. broad; petiole glabrous, 8-10 mm. long. Cymes 
flat, many-flowered, to 14 cm. long, about 8-9 cm. broad, composed 
of iV 5 opposite radii with small leafy bracts at the base, long- 
peduneled with the peduncle about 5 cm. long, rachis of the cyme 
and pedicels minutely crisp- villose; pedicels slender, 1.5-2 mm. 
long; sterile flowers few, sepals 4* white, rhombic-ovate to sub- 
orbicular, crisp along the margins, 11 mm. long and broad; fertile 


flowers bluish; calyx turbinate, minutely hispidulous, teeth tri- 
angular; petals broadly ovate, rounded at apex, 2 mm. long; 
stamens 10, subequal, shorter than the petals; ovary half-superior, 
style 3, recurved. Capsule unknown. 

Kwangsi: Chu-feng Shan, north of Luchen Hsien, on border 
of Kweichow, alt. 800 in., very common in woods or in open thick- 
ets, R. C. Cking, Kwangsi Exped, Metrop. Mus, of Nat. Hist. 
Acad. Sin. no. 5386 (type), June 8, 1928. 

A species of the section Euhydrangea, allied to H. yunnanensis, 
Rehd. differing in the leaves being minutely callose-denticulate 
and with very faint lateral veins, in the long-peduncled cyme and 
in the smaller sterile flowers. 

Citrus kwangsiensis, sp. now 

Arbor ad 10 m, alta, trunco 25 cm. diam., cortiee viridi-cinereo; 
ramuli longi, irregulariter angulati, striati, lenticellis sparsis ovali- 
bus muniti, sparse pilosuli, virides; spinae validae, pungentes, 
8-12 mm* longae. Folia coriarea, elliptico-oblonga, 0-15 cm. 
longa et 4-6. 5 cm. lata, apice obtusiuscula, basi late cuneata vel 
rotundata, irregulariter dupliciter adpresseque crenulato-serrulata, 
glabra, supra intense viridia et venis non prominent ibus, subtus 
pallide viridia, et venis elevatis reticulata; petioli articulati, anguste 
alati, 12-15 mm. longi, sparse pilosuli, Flores ignoti. Fructus 
immaturus ovoideus, leviter obtuse apiculatus, 3-5 cm, diam., 
13-locularis, cortice 11 mm. crasso glabro, pulpa exigua 1.5 cm. 
diam.; fructus maturus 7 cm. diam., luteus (fide colleetoris). 

Tree to 10 m. high, 25 cm. in diam,; bark greenish -grey; branches 
long, irregularly angular, striate, with scattered oval lenticels, 
sparsely pilosulous, green; spines stout, sharp, 8-12 mm. long, 
Leaves coriaceous, elliptic-oblong, obtusish at apex, broadly euneate 
to rounded at base, irregularly doubly and appressed-crenulate- 
serrulate along the margins, glabrous, intensely green and with 
non-prominent veins above, ])aler green and with elevated and 
reticulate veins beneath, 9-15 cm. long, 4-0.5 cm. broad; petiole 
articulate to the blade and the twig, narrowly winged, 12-15 mm. 
long, sparsely pilosulous at base. Flowers unknown. Young 
fruit ovoid, slightly obtusely apiculate at apex, 9.5 cm. in diam., 
rind 11 mm, thick, glabrous, pulp scanty, 1.5 cm. in diam., 13- 
segmented; mature fruit 7 cm. in diam., yellow (fide collector). 

North Kwangsi: Hoo-chi, alt. 900 m., cultivated in garden, 
R. Cm Ching f Kwangsi Exped. Metrop, Mus. Nat. Hist. Acad. Sin. 
no. 6450 (type), June 14, 1928. 

A very distinct species apparently related to ( 1 . medica L. and 
C. maxima Merr. by its fruits having very thick rind, but differing